Inner tube



FIG. 1 is a top perspective view of the inner tube;

FIG. 2 is a bottom perspective view of the inner tube;

FIG. 3 is a top view of the inner tube;

FIG. 4 is a left side view of the inner tube, with the right side viewbeing a mirror image of FIG. 4;

FIG. 5 is a front view of the inner tube;

FIG. 6 is a rear view of the inner tube; and,

FIG. 7 is a bottom view of the inner tube.

The ornamental design for an inner tube, as shown and described.